Tube



FIG. 1 is a perspective view of my design for a tube;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right and left side elevation view thereof;

FIG. 5 is a front and rear elevation view thereof;

FIG. 6 is a perspective view of an alternative embodiment thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a right and left side elevation view thereof; and,

FIG. 10 is a front and rear elevation view thereof. 

The ornamental design for a tube, as shown and described. 